Apologies, I should have said Soylent 1.5. Not sure why you decided to say "both false", however, given that sucrose most certainly has a GI of 65. Further, what is the relevance of saying _powder_. You realize that mixing a powder into water generally doesn't reduce its GI, right?

Further, saying "white bread is worse" is a laughable diversion. White bread is considered the unholy worst case for GI, so being better than it is not a high mark.